Internal-combustion engine.



J. J. MoLEAN. INTERNAL COMBUSTION ENGINE.

APPLICATION FILED NOV. 21, 1913.

1,127,659.- Patented Feb. 9, 1915.

JOHN JAMES MQLEAN, OI MOOSE JAW, SASKATCHEWAN, CANADA.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent. 7

Patented Feb. 9, 1915.?

Application filed November 21, 1913. Serial Ito. 802,313.

To all whom itmay concern: 7

Be it known that 1, JOHN JA EsMpLnAN, a subject of the King of Great Britain, and resident of the city of Moose Jaw, in the; Province of Saskatchewan, in the Dominion of Canada, have invented certain new and useful Improvements in lnternal combustion Engines, of which the following is the specification. 7

My invention relates to improvements in internal combustion engines, and the objects of the invention are to increase the amount of power obtainable from each cylinder, to more evenly distribute the power generated, to. effect an improvement in the balancing of 't-he engine and to reduce and simplify thenumber of working parts, and it consists essentially of the improved construction hereinafter described in detail in the accompanying specification and draw- IIIO'S.

figure 1 is a front elevation of my engine, a part being shown in SQCtIOII. Fig. 2 1s a. side elevation of the same. Fig. 3 1s a sectional detail of the feed pump.

Like letters of reference refer to like parts in the several drawings.

Referring to the drawings, A represents the cylinders of the engine prov ded with the usual water jacket E, such cylinders being coupled in airs, any number of pairs being capable 0 driving on the same shaft. The cylinders A are secured in a vertical position to a suitable base plate by means of the binding bolts 1. p

2 represents bearings on the front of the cylinders and projecting therefrom.

3 indicates brackets having orifices 4 therethrough, such brackets being formed integral with the cylinders A and on that side of them diametrically opposite the bearin s 2.

%o overcome vibration of the cylinders the stays 5 are secured to the brackets 3. The ends of the cylinders A are open and are provided with pistons B adapted to be $1- multaneously driven in opposite directions from the center thereof, such pistons 13 being provided with a bar F extending across the back face and overhanging it, the ends of such bar being designed to slidably fit the slots G in the side of the cylinders.

7 represents rods connecting the lower piston of one cylinder to the second cylinder thereby efi'ecting a balthe upper piston of,

anceiand overcoming any tendency of'unevenwearing on the pistons.

C represents thecrank shaft rotatably mounted in the bearings 2, such shaft being prouided with cranks 8 arranged in pairs and disposed on the shaft diametrically opposite each other, the said shaft being fur? ther provided with fly wheels 9 suitably keyed to the overhanging'ends.

The ends 10 of the bars F remote from the rods 7 are suitably journaled and each is pivotally connected to the end 11 of the connecting rod 13, the other end 12 of such connecting rod being pivotally connected to the crank 8.

D represents a feed pump secured to the side of the cylinders A, such pump cylinder being open at one end, the other end being provided with a suction pipe 22 connected to the fuel reservoir, such pipe being provided with an inlet valve 14 and a discharge conduit 15- provided with a suitable valve therein. A piston 16 is slidably mounted in said pump cylinder and is actuated by means of the piston rod 17 fixed at its outer end to the end 10 of the cross bar F.

The ignition mechanism consists of a spark plug-18 actuated by means of the rod 19 carried by the end 10 of the cross bar F, such rod' being free to slide within the guide 20.

The operation of the engine is as follows: A charge of combustible fuel is forced into the cylinder A by means of the pump D and when the pistons B are at their innermost position the charge is fired by means of the spark plug 18 actuated by the rod 19, the combustion of such fuel driving the pistons B outwardly in opposite directions thereby utilizing the expansion in both directions. Just as the pistons reach their extreme outward stroke the products of combustion are exhausted through the orifice 21 in the'cylinder walls. The power generated by the pistons B is transmitted to the cranks 8 through the connecting rods 13 and thence to the shaft C. Bv coupling the pistons B of the opposite cylinders in the manner described the forces generated are more evenly distributed and any tendencv'of the pistons to wear unevenly in the cylinder is obviated.

From this description it will be seen that l have invented an engine simple of construction, compact, easily assembled and ton of onecylinder to the upper piston of the other cylinder, a crank shaft, connecting rods extending between said crank shaft and the journaled ends of said bars, means for introducing combustible fuel into the cylinders, and means for igniting such combustible fuel. a p

2. An internal combustion engine comprising cylinders open at both ends such cylinders being arranged in pairs, two pistons slidably mounted in each cylinder, the

lower piston of one cylinder being connected to the upper piston of the second cylinder, rotary mechanism driven by such pistons, means forintroducing combustible fuel into the cylinders, a spark plug on eachcylinder, a guide on the lateral face of each cylinder,

a rod carried by the bar on each of the said upper pistons slidably mounted in the said guide and designed to actuate said spark plugs.

3. An internal combustion engine comprising cylinders open -at both ends, such cylinders being arranged in pairs, two pis= tons slidably mounted in each cylinder, bars extending across the back of such pistons, rods extending between the ends of said bars connecting the lower piston of one cylinder with the upper piston of the second c linder, rotary mechanism driven by the pistons, means for introducing combustible fuel into the cylinder consisting of a pump cylinder, a piston operating in the said cylinder, a piston rod connected at one end to the bar mounted on the upper piston of each cylinder, a spark plug on each cylinder, a guide on the lateral face of each cylinder, a rod slidably mounted in the said guide, connected at one end to the said bar of the upper piston of each cylinder, such rod being designed to actuate the said spark lu P 1% witness whereof I have hereunto set my hand in the presence of two witnesses. JOHN JAMES MCLEAN. Witnesses:

MARGERY OBmnn, 'PHOEBE BUTTERLAY. 

